baber/WOPTO huggingface dataset:
Patent CA-2116178-C (CA)
Inventor: TAKAYAMA SATOSHI
IPC: H04R1/28
Filed: 1994-02-22
Granted: 2000-04-11
Abstract: A speaker system comprises an acoustic tube with one end coupled to the back side of the speaker unit and the other end released to a sound field space through an opening window, and at least one air chamber disposed along the acoustic tube. The cross sectional area of the air chamber is larger than the cross sectional area of the acoustic tube, and the cross sectional area of the opening window is smaller than the cross sectional area of the acoustic tube. Therefore, the air chamber forms an acoustic filter so that the higher resonance frequency components in medium and high frequency region caused in the acoustic tube may not be radiated from the opening window, and formation of peaks arid bottoms of frequency characteristic due to interference with the sound radiated from the front side of the speaker is prevented.      The opening window of a small cross sectional area lowers the resonance frequency of the acoustic tube.      Alternatively, the speaker system comprises an acoustic tube with one end coupled to the back side of the speaker unit and the other end released to a sound field space through an opening window, and at least one air chamber disposed along the acoustic tube. The cross sectional area of the air chamber is larger than the cross sectional area of the acoustic tube, and the cross sectional area of the opening window is smaller than the cross sectional area of the acoustic tube. The branch chamber possessing different route lengths causes a phase difference in the acoustic tube to cancel the resonance in the acoustic tube, so that formation of peaks and bottoms in the frequency characteristic may be prevented.      An acoustic tube with one end closed and other end coupled to the front side of the speaker, suppresses the amplitude of the diagram of the speaker under low frequency region and the generation of abnormal sound such as speaker bottom beat phenomenon.
Patent CA-2118412-C (CA)
Inventor: ZANZIG JERALD G
IPC: B65F3/20
Filed: 1994-03-18
Granted: 2005-06-07
Abstract: A refuse collection vehicle (10,190) including a collection towing vehicle (13) having a refuse loading mechanism (27) for loading a semi-trailer (12,192,200) coupled to a fifth wheel (25,124,140), the semi-trailer having a refuse collection body (50,211, 212) for receiving refuse from the refuse loading mechanism and a hoist mechanism (60) for tilting the refuse collection body.
Patent CA-2118608-C (CA)
Title: Portable top drive assembly
Inventor: TESSARI ROBERT M
IPC: E21B3/02
Filed: 1994-03-09
Granted: 1996-03-19
Abstract: The assembly is designed to convert a conventional land rig to "top drive".  It comprises a torque track that is shipped in sections and is assembled to form a rigid track extending vertically in the derrick.  The track is rigidly attached to the derrick only at its base, so that the track is free to twist and-deflect laterally along its length.  The housing of the top drive is connected by an angled, pivotally mounted link means with a tubular bushing that embraces and slides along the track.  The link means and bushing are adapted to restrain rotation of the housing relative to the track, while transmitting both side and torque reactive loads to the track.   The angled pivoting link enables the top drive to be displaced outwardly to a position over the mousehole. The top drive incorporates a hydraulic motor and gear drive assembly for rotating a drive shaft connecting the drill string and hoisting means.  The housing does not carry the drill string load and can be made lighter and more compact as a result.
Patent CA-2120542-C (CA)
Title: Cell relay transport mechanism
Inventor: GRAY TOM
IPC: H04L47/43
Filed: 1994-04-05
Granted: 2003-07-08
Abstract: A telecommunications system comprises a plurality of servers interconnected by a TDM backbone and able to share a common channel or bandwidth. An arrangement for sending messages or files between said servers comprises a master node for sending a continuous stream of cells round the backbone, each cell having a header portion and a payload portion, and a plurality of downstream nodes which upon arrival of incoming cells insert information therein, read information therefrom, or allow the cells to pass thereby unaltered.
Patent CA-2121074-C (CA)
Inventor: MENDOZA RAMON CHRISTOPHER
IPC: B65D19/20
Filed: 1994-04-12
Granted: 1997-01-21
Abstract: A palletized container system including deck and runner structure formed from a unitary deck sheet of corrugated material having top and bottom generally planar surfaces and opposite parallel sides.  The deck sheet is folded downwardly and then upwardly at each of its sides to form fore-and-aft extending outer runners unitary with the remainder of the sheet to provide outer runner lateral stability.  An elongated central runner is fixed to the bottom of the sheet and extends parallel to the outer runners.  A corrugated wrapper extends under the central and side runners and is folded around the side runners and over the deck sheet.  The wrapper has upper planar portions extending inwardly from the side portions of the side runners toward the central runner and fixed to the top planar surface.  A one-piece liner board is fixed to the upper planar portions of the wrapper to increase strength and includes flaps folded upwardly to slidably receive an open bottom container.
Patent CA-2125258-C (CA)
Title: Multicapsule intraluminal grafting system and method
Inventor: QUIACHON DINAH B
IPC: A61F2/04
Filed: 1994-06-06
Granted: 1998-12-22
Abstract: An intraluminal grafting system having a balloon catheter assembly, a capsule catheter assembly and capsule jacket assembly is used for deploying a graft having attachment means in the vessel of an animal body.  The system contains a proximal capsule means and a distal capsule means, wherein the graft is disposed within the two capsule means and a removable sheath covers the graft and capsule means. The graft is comprised of a tubular member having superior and inferior ends, having attachment means with wall engaging members secured thereto.  The balloon catheter is disposed within the capsule catheter to provide relative movement between the balloon catheter and the capsule catheter, whereby the graft can be removed from the capsule means. The balloon is inflated to firmly implant the graft and attachment means within the vessel.  The graft and attachment means remain in the vessel after the intraluminal grafting system is withdrawn.
Patent CA-2126502-C (CA)
Inventor: IWANAMI HIKOICHI
IPC: C01B32/40
Filed: 1994-06-22
Granted: 2003-12-30
Abstract: A catalyst for the reduction of carbon dioxide which comprises at least one transition metal selected from the group consisting of Group VIII (e. g., Ni, Fe, Co, Ru, Rh) and Group VIa (e.g., Mo, W) in the Periodic Table on zinc oxide alone or a composite containing zinc oxide and at least one metal oxide of a metal selected from the group consisting of Group IIIb (e.g., Al, Ga) and Group IVa (e.g., Ti, Zr) in the Periodic Table.
Patent CA-2127989-C (CA)
Title: Ferromagnetic wire electromagnetic actuator
Inventor: STUART KEITH O
IPC: H01F7/122
Filed: 1993-10-25
Granted: 1998-03-24
Abstract: An electromagnetic actuator (10) is disclosed having a ferromagnetic case (12) and defining a central axis with a slidable core (16) disposed coaxial with the central axis. The core includes first end (20), second end (22) and core (24) portions. The actuator (10) further includes a magnetic flux developing element (18) mounted coaxial with the central axis and first and second ferromagnetic electrical coils (14). The first and second coils (14) are mounted in a facing relationship with the first (20) and second (22) end portions of the core (16). The coils (14) have a cross-sectional length in a direction perpendicular to the central axis and a width of insulating space between the turns of the coils (14) in a direction parallel to the central axis. The length and width are selected such that the reluctance of the width of the insulating space is greater than the reluctance of the cross-sectional length of the coil wire adjacent the insulating space.
Patent CA-2129176-C (CA)
Title: Process for treatment of sodium hydroxide waste liquor containing aluminum
Inventor: TAKAYAMA SUSUMU
IPC: C01F7/785
Filed: 1994-07-29
Granted: 2004-04-20
Abstract: A process for treating sodium hydroxide waste liquor containing aluminum, comprising the steps of: adding, to aluminum-containing sodium hydroxide waste liquor, at least one of MgO and Mg(OH)2 in an amount of 0.5 to 3 moles with respect to 1 mole of aluminum to cause a reaction at 70°C or more; and separating and removing a precipitated magnesium-aluminum compound is disclosed. The present invention makes it possible to recover recyclable sodium hydroxide from an aluminum-containing sodium hydroxide waste liquor. Even if the recovering procedure is repeated, no carbonate ions are accumulated. Therefore, it is possible to prevent degradation of the treating solution containing sodium,hydroxide. Further, the by-product is a useful compound, and thus, there is no problem in the reprocessing or disposal of the by-product.
Patent CA-2131265-C (CA)
Inventor: TURUDIC ANDY
IPC: H04J3/16
Filed: 1994-08-31
Granted: 2004-07-06
Abstract: An interface is disclosed that formats a first link (a source link - e.g., a T1 link) having N channels to fit into a second link (a source link - e.g., a PCM-30 or a doubled T1 link) having N + M channels. Each of the first and second links are implemented with primary rate carrier links, and have a standard payload portion and a standard overhead portion. A mechanism is disclosed for routing information between the first link and the second link, so that information being transported over the first link can also be transported over the second link. An adding mechanism is also disclosed for routing supplemental overhead information to at least one added overhead channel within the second link, wherein the added overhead channel occupies a standard payload portion of the second link. An overhead information bit is disclosed, which transmits information within a (k)th bit of an (l)th channel of each frame of the second link. An information bit signal is formed with at least five consecutive of the (k)th bits.   Using the formed information bit signal, information is conveyed regarding the communications link. A path overhead byte is provided for transportation within the added overhead channel of the second link, and includes various overhead bits, including, e.g., the information bit noted above, for performing several maintenance and performance monitoring functions. Four of the bits within the path overhead byte are essentially equivalent to bits within an overhead byte provided for SONET networks.
Patent CA-2133927-C (CA)
Inventor: GOATER GEORGE H
IPC: B27B31/00
Filed: 1994-10-20
Granted: 1998-04-28
Abstract: A lumber lug loader for placing boards onto a lugged transfer deck is disclosed.   The lug loader has a lower board accelerating deck and an upper board-contacting member.  The lower board accelerating deck and the upper board-contacting member have driven moving surfaces which can be clamped against the board from above and below.  Because the boards are clamped while they are being accelerated to the speed of the lugged transfer deck, the boards can be subjected to high  acceleration  without  excessive  slipping  or significant damage to the boards.   The boards are accelerated  smoothly  and  quickly.    This  design therefore allows for operation at higher speeds than is possible with previous lug loaders.  The lug loader also provides a movable overhead stop.  In operation, boards are accumulated on a  smooth transfer deck behind the stop.  When a board is present at the stop and a row of lugs on the lugged transfer deck is approaching the correct position for loading the stop is retracted and the moving surfaces of the upper and lower  board-contacting  members  are  brought into forcible  contact  with  the  board.    The  board  is accelerated between the upper and lower board-contacting members.  After the board is accelerated it is carried to and deposited on the lugged transfer deck.  While the board is being accelerated the stop is put in place behind the board.   The cycle is repeated each  time  a  row  of  lugs  on  the  lugged transfer deck passes.  This accomplishes reliable high speed  loading  of  individual  pieces  of  lumber (singulating), onto the lugged transfer deck, at the correct position relative to the lug.
Patent CA-2137873-C (CA)
Title: Electron source and electron beam apparatus
Inventor: MITSUTAKE HIDEAKI
IPC: H01J31/12
Filed: 1994-12-12
Granted: 2000-01-25
Abstract: An electron source or electron beam apparatus comprises an electron-emitting device and a shield member disposed above the electron-emitting device.      The electron-emitting device generates an electric field component, when energized, that is parallel to a substrate surface on which the electron-emitting device is disposed, while the shield member allows electrons emitted from the electron-emitting device to pass therethrough, but blocks off charged particles flying toward the electron emitting device.
Patent CA-2139458-C (CA)
Inventor: GRAMMATICA STEVEN J
IPC: G03G15/02
Filed: 1995-01-03
Granted: 2000-04-11
Abstract: An imaging process including providing an electrophotographic imaging member including a substrate, a charge generating layer and a charge transport layer including a small molecule hole transporting diarylamine, a small molecule hole transporting tritolyl amine and a film forming binder, depositing a uniform electrostatic charge on the imaging member with a corona generating device to which power is being supplied, the corona generating device comprising at least one bare metal wire adjacent to and spaced from the imaging member, exposing the imaging member with activating radiation in image configuration to form an electrostatic latent image, developing the latent image with marking particles to form a toner image, transfering the toner image to a receiving member, repeating the depositing, exposing, developing, transfering steps, resting the imaging member for at least 15 minutes under the corona generating device while the power to the corona generating device is removed and while the corona generating device is emitting sufficent effluents to render the surface region of the electrophotographic imaging member underlying the corona generating device electrically conductive if the tritolyl amine were replaced with the small molecule hole transporting diarylamine, supplying power to the corona generating device, and repeating the depositing, exposing, developing, transfering steps at least once.
Patent CA-2143934-C (CA)
Inventor: CORRIVEAU CHRISTINE L
IPC: A23G4/06
Filed: 1993-09-07
Granted: 1999-01-19
Abstract: A novel chewing gum and confection composition is disclosed which is pourable an d includes between about 30 and about 90 percent particles of chewing gum having an average particle size of between a bout 0.5 and 6 mm. The pourable composition also includes between about 10 and about 70 percent dry, free-flowing, sweet con fection. Preferably, the chewing gum particles are bits of bubble gum and the sweet confection is powdered dextrose. A novel me thod of making this pourable composition is also disclosed.
Patent CA-2145189-C (CA)
Inventor: RATZ JAMES W
IPC: G05D23/19
Filed: 1993-11-19
Granted: 2003-05-06
Abstract: A low temperature limit for battery powered thermostats for energizing and de-energizing the heating system when the bat-tery (15) can no longer operate the thermostat (1). The thermostat (1) comprises a battery powered thermostat control (10) for en-ergizing and de-energizing the heating system and a low temperature limit (24) electrically connected in parallel with the battery powered thermostat control (10). The battery powered thermostat control (10) disables a controllable switch (20) and, thereby, the low temperature limit bimetal switch (24) when the battery is charged. When the battery (15) is discharged, it enables the low tem-perature bimetal switch limit (24). Thereby, when the thermostat is no longer operational, the low temperature limit (24) energizes the heating system when the ambient temperature present on the thermostat (1) is below a preselected temperature.
Patent CA-2146302-C (CA)
Title: Two-component packages
Inventor: ARNOLD PETER STUART
IPC: B65D77/04
Filed: 1995-04-04
Granted: 2006-03-07
Abstract: Two-component packages for storing two components which are to be isolated from each other during storage and mixed when the package is opened. The packages comprise an outer container (2) for a first component having a threaded neck (3). A closure cap (5) is provided to close the threaded neck (3). A capsule (6) for a second component is located inside the outer container (2) and extends into the threaded neck (3) of the outer container (2). A first ratchet means extends downwardly from the base of the closure cap (5) and engages with a second ratchet means on the top part (7) of the capsule (6), whereby the closure cap (5) can be screwed down without rotating the said top part (7) of the capsule (6), but cannot readily be unscrewed without also rotating the said top part (7). A rotation block (13,14) prevents rotation of a lower part (11) of the capsule (6). As a result, unscrewing the closure cap (5) exerts a torsional force on the capsule (6). Release means (12), such as a screw thread, are provided in the capsule (6) to release the contents of the capsule (6) when the said torsional force is applied.
Patent CA-2146445-C (CA)
Title: Receiver and repeater for spread-spectrum communications
Inventor: ADACHI FUMIYUKI
IPC: B62D25/08
Filed: 1994-08-04
Granted: 1999-06-01
Abstract: A repeater improving the effect of a RAKE reception.  A received signal from a base station parallelly passes a first path including a first delay circuit and a second path including no delay circuit, and is transmitted to a mobile station.  A received signal from the mobile station parallelly passes a third path including a second delay circuit and a fourth path including no delay circuit, and is transmitted to the base station.  The delay time of the delay circuits are set at one chip interval or more of a spreading code.  This forcedly produces multipath waves which are resolvable by a RAKE receiver.  The RAKE receiver estimates amplitudes of desired wave components for individual delayed waves, performs weighting of the respective delayed wave components from detectors by using the estimated amplitudes, and makes symbol decision in terms of the combined weighted signal.
Patent CA-2148938-C (CA)
Title: Method for the mechanical removal of moisture from a filter cake and an apparatus for implementing the method
Inventor: BOTT REINHARD
IPC: B01D33/66
Filed: 1993-11-10
Granted: 2002-02-26
Abstract: In a process for mechanically dehumidifying a filter cake, differential pressure causes a treatment fluid to flow through the filter cake. Pressure and temperature on the side of the filter cake which faces the filter surface are set in such a manner that the treatment fluid is present there in its liquid phase, whereas pressure and temperature on the side of the filter cake opposite to the filter surface are set in such a manner that the treatment fluid is present on that side in its gaseous phase.
Patent CA-2152810-C (CA)
Inventor: KLOMSDORF ARMIN
IPC: H04B1/04
Filed: 1994-10-06
Granted: 1999-12-28
Abstract: A transmission line coupler (115) for a transmitter output signal (123) generated by an RF signal amplifier (103) includes a through-path transmission line (201) and a coupled-path transmission line (202) electromagnetically coupled thereto by multiple serpentine-like portions (such as portions 641, 642, 643 and 644 in Fig. 6), which are disposed on opposite sides of the through-path transmission line (201) for enhancing coupling sensitivity and eliminating degradation in the amount of coupling due to variations in the transmission line plating registration. Offset portions (641, 643) on one side of the through-path transmission line (201) provide substantially the same amount of coupling as the offset portions (642, 643) on the other side of the through-path transmission line (201). The transmission line coupler (115) is embedded in the output match of the final amplifier (103) and includes complex impedances (212 and 210, 222) at each port of the coupled-path transmission line (202) for substantially eliminating undesired reflections. The coupled port of the coupled-path transmission line (202) is coupled by an inductor (211) to a hot-carrier diode (206) for enhancing the detection sensitivity thereof.
Patent CA-2158423-C (CA)
Inventor: JAMES WILLIAM A
IPC: D04H1/46
Filed: 1995-09-15
Granted: 2007-11-27
Abstract: Nonwoven fabrics having a fibrous background portion in one plane thereof and raised fibrous portions in another plane thereof. There may be two types of raised portions. In one type, the basis weight of the raised portion is substantially the same as the basis weight of the background portion. In another type of raised portion, the basis weight is greater than the basis weight of the background portion. The raised portions are joined to the background portion by a fibrous transition region.
Patent CA-2164769-C (CA)
Inventor: CAMERON DONALD JAMES
IPC: F42B12/54
Filed: 1995-12-08
Granted: 2002-08-27
Abstract: A retrieval system for a range animal injection apparatus is described. The retrieval system includes a valve positioned between a syringe and a needle.  In an open position there is a free flow of liquids from a syringe to the needle.  In the closed position flow is precluded. A contact member is movable axially in relation to the needle between a first end and a second end.   A rigid coupling couples the movement of the contact member and a valve member.  The valve is in a closed position when the contact member is positioned adjacent the second end of the needle.  The valve is in an open position when the contact member is positioned adjacent the first end of the needle.  When the second end of the needle enters a hide of an animal the contact member is pushed toward the first end of the needle by the hide of the animal forcing the valve into the open position.   Pressure from a pressure source urges liquid medication in the syringe passed the open valve member through the needle until the liquid medication has vacated the syringe.   Continued pressure from the pressure source then urges the valve member into the closed position, thereby moving the contact member toward the second end of the needle until the contact member pushes the needle out of the hide of the animal.
Patent CA-2166596-C (CA)
Title: Borate-starch compositions for use in oil field and other industrial applications
Inventor: SANNER TODD
IPC: C08B31/00
Filed: 1996-01-04
Granted: 1999-04-06
Abstract: Borated starch compositions useful for controlling the rate of hydratable polymers in aqueous media.